The evolution of the corrosion process of AA 2024-T3 in 0.58 g L−1NaCl solution (pH 10) with sodiumdodecylbenzenesulfonate (SDBS) and lanthanum chloride inhibitors was studied with electrochemicaland surface ****ysis methods. With the addition of the compounded LaCl3and SDBS inhibitors, in theearly stage the polarization behavior of AA 2024-T3 changed from active corrosion to passivation, andboth the general corrosion and pitting corrosion were inhibited. However, with the immersion timeextended, the passive behavior gradually disappeared and pitting happened at the Cu-rich phases. After24 h immersion, the compounded inhibitors still showed good inhibition for general corrosion, but thepolarization curve again presented the characteristic similar to active polarization. The compoundedinhibitors also inhibited the pitting corrosion to some extent. The acting mechani** of the inhibitorsSDBS and La3Cl on the corrosion process of AA 2024-T3 in the test solution was discussed.
